nixpkgs/pkgs/tools/X11/primus/default.nix

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# For a 64bit + 32bit system the LD_LIBRARY_PATH must contain both the 32bit and 64bit primus
# libraries. Providing a different primusrun for each architecture will not work as expected. EG:
# Using steam under wine can involve both 32bit and 64bit process. All of which inherit the
# same LD_LIBRARY_PATH.
# Other distributions do the same.
{ stdenv
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, stdenv_i686
, lib
, primusLib
, writeScriptBin
, runtimeShell
, primusLib_i686 ? null
, useNvidia ? true
}:
let
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# We override stdenv in case we need different ABI for libGL
primusLib_ = primusLib.override { inherit stdenv; };
primusLib_i686_ = primusLib_i686.override { stdenv = stdenv_i686; };
primus = if useNvidia then primusLib_ else primusLib_.override { nvidia_x11 = null; };
primus_i686 = if useNvidia then primusLib_i686_ else primusLib_i686_.override { nvidia_x11 = null; };
ldPath = lib.makeLibraryPath (lib.filter (x: x != null) (
[ primus primus.glvnd ]
++ lib.optionals (primusLib_i686 != null) [ primus_i686 primus_i686.glvnd ]
));
in writeScriptBin "primusrun" ''
#!${runtimeShell}
export LD_LIBRARY_PATH=${ldPath}''${LD_LIBRARY_PATH:+:}$LD_LIBRARY_PATH
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# https://bugs.launchpad.net/ubuntu/+source/bumblebee/+bug/1758243
export __GLVND_DISALLOW_PATCHING=1
exec "$@"
''